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Synthesis and characterisation of polyurethane coatings based on trimer of isophorone diisocyanate (IPDI) and monoglycerides of oils

Synthèse et caractérisation de revêtements polyuréthaniques basées sur une trimère de diisocyanate d’isophorone (IPDI) et sur des monoglycérides d’huiles

Die Synthese und Charakterisierung von Polyurethanlacken auf Basis von Trimeren von Isophorondiisozyanat (IPDI) und Ölmonoglyzeriden

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Surface Coatings International Part B: Coatings Transactions

Summaries

Monoglycerides (MGs) of four oils (castor, linseed, soybean and sesame) were prepared. They were reacted with a trimer in definite proportions to prepare polyurethane (PU) coatings. These coatings were applied in the form of thin films on tin plates and analysed for various coating properties such as gloss, scratch resistance, flexibility properties and physicochemical tests. A highly cross-linked product was obtained due to the higher functionality associated with MGs compared with their molecular weight. The trimer also imparted cross-linking due to its trifunctionality, and a hard yet flexible, tough, glossy polyurethane coating was obtained.

Résumé

Des monoglycérides (MGs) de quatre huiles (ricin, lin, soya et sésame) ont été préparés. On les a fait réagir, dans des proportions définies, avec une trimère afin de produire des revêtements polyuréthaniques (PU). Ces revêtements ont été appliqués, sous la forme de minces films, à des plaques d’étain, et ont été analysés afin de constater des propriétés de revêtement variées, telles que le brillant, la résistance aux éraflures, les propriétés de flexibilité et [leur performance au cours] des essais physicochimiques. On a obtenu un produit qui était très réticulé grâce à la fonctionnalité plus élevée associée aux MGs par rapport à leur poids molaire. La trimère, aussi, a donné de la réticulation, grâce à sa trifontionnalité, et l’on a obtenu un revêtement polyuréthanique qui était robuste et brillant mais aussi flexible.

Zusammenfassung

Die Monoglyzeride (MGs) von vier Ölen (Rizinus, Leinsamen, Soja und Sesam) wurden hergestellt und mit einem Trimer in bestimmten Proportionen reagiert, um Polyurthanlacke herzustellen. Diese Lacke wurden in dünnen Schichten auf Zinkplatten aufgebracht und nach verschiedenen Eigenschaften wie Glanz, Kratzfestigkeit, Flexibilität und ihren physiochemischen Eigenschaften bewertet. Dank der grösseren Funktionalität im Verhältnis zu ihrem Molekulargewicht erzielten wir mit den MGs ein stark kreuzvernetztes Produkt. Die dreifache Funktionalitat der Trimere trug auch zu der Kreuzvernetzung bei, und der erhaltene Polyurethanlack war sowohl hart als auch flexibel, widerstandsfähig und glänzend.

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Authors and Affiliations

  1. Department of Polymer Chemistry, School of Chemical Sciences, University Department of Chemical Technology, North Maharashtra University, 425 001, Jalgaon, Maharashtra, India

    V. V. Gite, R. D. Kulkarni, D. G. Hundiwale & U. R. Kapadi

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  1. V. V. Gite
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  2. R. D. Kulkarni
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  3. D. G. Hundiwale
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  4. U. R. Kapadi
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Correspondence to D. G. Hundiwale.

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Gite, V.V., Kulkarni, R.D., Hundiwale, D.G. et al. Synthesis and characterisation of polyurethane coatings based on trimer of isophorone diisocyanate (IPDI) and monoglycerides of oils. Surface Coatings International Part B: Coatings Transactions 89, 117–122 (2006). https://doi.org/10.1007/BF02699641

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  • DOI: https://doi.org/10.1007/BF02699641

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